Achilles Tendinopathy: Causes, Symptoms & Non-Surgical Treatment in SF
Achilles tendinopathy is overuse pain and thickening in the tendon that connects your calf to your heel, and most people improve with loading exercises, activity changes, and targeted care rather than surgery. Here is what causes it, how to know what you are dealing with, and what actually works.
What Is Achilles Tendinopathy?
Achilles tendinopathy is pain, stiffness, and gradual degeneration of the Achilles tendon, the thick band of tissue that connects your calf muscles to your heel bone. It shows up in two forms. Non-insertional tendinopathy affects the mid-portion of the tendon, roughly two to six centimeters above the heel, and is most common in runners. Insertional tendinopathy affects the point where the tendon attaches to the heel bone, and often comes with a bone spur.
Both are overuse injuries. They build up from repeated small tears and failed healing, not from one bad step, which is why the pain tends to creep in over weeks rather than show up all at once.
Why This Matters For San Francisco Runners And Walkers
Between the hills, the stairs, and a city full of people who run the Embarcadero or train for Bay to Breakers, we see a steady stream of mid-portion Achilles tendinopathy at both Truspine locations. The hills in particular load the calf and Achilles harder than flat ground, which is often the piece people training here are missing.
What Causes Achilles Tendinopathy?
The most common driver is a sudden increase in activity, whether that is mileage, hill work, or simply standing and walking more than your tendon is used to. Other contributors include:
Tight or weak calves
Less give in the gastrocnemius and soleus means more direct load on the tendon itself.
Worn or changed footwear
A new shoe, a flatter shoe, or worn-out cushioning changes how force travels through the heel.
Haglund's deformity
A bony enlargement at the back of the heel that can irritate the insertional tendon.
Age-related change
Tendon tissue becomes less elastic over time, which is part of why insertional tendinopathy is more common after 40.
What Are The Symptoms Of Achilles Tendinopathy?
The hallmark symptom is pain and stiffness along the tendon that is worst first thing in the morning or after you have been sitting a while, then eases slightly once you warm up, then returns after activity or the next day. You may also notice:
- Thickening or a noticeable lump along the tendon
- Tenderness to the touch two to six centimeters above the heel, or directly at the heel for insertional cases
- Pain that worsens with running, hill climbing, or pushing off to walk quickly
- Heel pain aggravated by stiff-backed shoes, for insertional tendinopathy
How Is Achilles Tendinopathy Treated Without Surgery?
Most Achilles tendinopathy responds to conservative care. We typically build a plan around the following, in roughly this order:
- Eccentric loading exercises: slow, controlled heel drops are the backbone of rehab for non-insertional tendinopathy, started under supervision so the loading progresses correctly rather than aggravating the tendon.
- Activity modification: short-term swaps to low-impact cross training like cycling or swimming while the tendon calms down, without going fully sedentary, which slows healing.
- Shockwave therapy: for cases that are not progressing with exercise alone, extracorporeal shockwave therapy (ESWT) has moderate-quality evidence behind it for mid-portion Achilles tendinopathy specifically, with research showing meaningful improvement in validated pain and function scores when added to standard care. It is one of the more evidence-backed options we offer for stubborn tendon pain, and it is where we usually start once a straightforward loading program has not been enough.
- Orthotics and heel lifts: small changes to shoe setup that reduce tendon strain during the day.
We generally steer away from cortisone injections near the Achilles given the added rupture risk, and we are selective about extended boot immobilization, since too much rest weakens the calf and can slow the return to activity.
Related Conditions We See Alongside Achilles Tendinopathy
Achilles pain rarely shows up alone. It is worth a broader foot and ankle assessment if you are also dealing with heel pain in the morning, which often points to plantar fasciitis and responds to the same Graston technique approach we use for the plantar fascia, or with general training overload, which falls under sports medicine care rather than a single-tendon fix.
Common Questions
How long does Achilles tendinopathy take to heal?
Mild cases often improve within four to six weeks of consistent eccentric loading. More established cases, especially insertional tendinopathy, can take three to six months of steady rehab. Shockwave therapy tends to shorten that timeline when added early rather than after months of plateau.
Can I keep running with Achilles tendinopathy?
Usually yes, within limits. We typically reduce mileage and hills, avoid speed work, and watch for pain that persists more than a few hours after a run. Pain that lingers into the next morning is the signal to back off further and bring in loading exercises or shockwave therapy.
Is Achilles tendinopathy the same as Achilles tendinitis?
They describe the same area but different stages. Tendinitis implies active inflammation, which is really only present in the earliest days. Most of what we see clinically is tendinopathy, meaning degeneration and failed healing of the tendon tissue rather than ongoing inflammation, which is part of why rest alone rarely resolves it.
Do I need an MRI to diagnose Achilles tendinopathy?
Not usually. A clinical exam, looking at tendon thickness, tenderness location, and how the pain behaves with activity, is enough in most cases. Imaging becomes useful if symptoms are not improving as expected or if we need to rule out a partial tear.
What is the difference between insertional and non-insertional Achilles tendinopathy?
Non-insertional affects the mid-tendon and is more common in runners. Insertional affects where the tendon meets the heel bone, often alongside a bone spur, and needs a different approach to loading exercises since aggressive heel drops can aggravate it rather than help.
Sources
- American Academy of Orthopaedic Surgeons, OrthoInfo. "Achilles Tendinitis." Referenced for the insertional versus non-insertional distinction, eccentric exercise guidance, and rupture warning signs.
- Liao, C.D. et al. "Efficacy of Extracorporeal Shockwave Therapy for Achilles Tendinopathy: A Systematic Review and Meta-Analysis of Randomized Controlled Trials," Sports Medicine Open, 2022. Referenced for the evidence on ESWT improving validated pain and function scores in mid-portion Achilles tendinopathy.
This information is educational and does not replace a one-on-one evaluation. If you are dealing with Achilles pain, we would rather see you for a quick assessment than have you guess at a home program that is not built for your specific case.
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